Crown bearing



2 Sheets-*Sheet R. D. BOBBITT CROWN BEARING Filed April l2, 1925 July l0, 1928.

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ATTORNEY Patented July l0, 1928.,

UNITED STATES 1,611,071 raralvrr OFFICE.

RALPH D. BOBBITT, OF NORFOLK, VIRGINIA.

CROWN BEARING.

Application 111011 April 12,

My present invention has reference to an `adjustable crown bearing for journals and readily applied and as easily removed without removing the drive box from the j ournal.`

A further object is the provision of an adjustable journal or drive box for crown bearings which is made up of two segmental sections held in the box in a novel manner and affording a bearing for the journal, there being wedge means between the box and the bearing members and operating means for said wedge means, whereby the journal members may be'forced away from each other to compensate for wear or brought toward each other for ready insertion or removal of the weight on the bearing or driving box. j

A still further object is the provision of a means for this purpose `that is characterized by simplicity in construction. comprises few parts which may bc readily manufactured, which may be easily applied or removed and which will perform its unction with efliciency and with accuracy.

To the attainment of the foregoing the improvement further resides in certain other novel features of construction, combination and operative association of parts, a. satisfactory embodiment of which is illustrated by the accompanying drawings.

In the drawings: Y

Figure 1 is a front elevation illustrating the application of my improvement.

Figure 2 is a sectional view on the line 2-2 of Figure 1.

Figure Bis a top plan view of the improvement, the box being indicated by the dotted lines.

Figure 4 is a perspective View to illustrate the bearing members and the adjustable element therefor.

`Figure 5 is a transverse sectional view to illustrate a slight modification.

Figure 6 is a perspective view of the bracket member employed. j

Figure 7 is a face view of the hearing mem er.

The drive or journal box is of the usual construction and is indicated in the drawings by the numeral 1. The box is provided with theusual opening for the journal ment through the box.

is threaded on the screw 11.

1926. serial No. 101.506.

and for the brass bearings for the journal, the said opening being arranged above the cellar of the box. The wall provided by this opening, has its upper portion, in the present instance, formed with a transverse groove 2, and the said wall, at the center of the top portion thereof?, is formed with a wedge-shaped 4depression whose upper wall is rounded, as at 3; f

In carrying out my invent-ion l employ two segmental brass bearings 4-4. Both of-` these bearings are otv a similar construction, each of the said bearings having its outer face formed with a central rib 5 that extends from its reduced lower end to a point adjacent its upper and thickened end. The ribs 5 are adapted to be received in the groove 2 and are adapted to contact with the side walls provided by the said groove, and by virtue of such contact to. hold the bearing member 4 from longitudinal movej Inward of the ribs the thickened outer faces of the sections 4 are formed with longitudinally arranged grooves 6. These grooves v are disposed at an angle, being arranged inwardly from the outer to the inner faces of the members 4. n

The numeral 7 designates a wedge-shaped adjusting member fory the bearing sections 4.k This member has its outer face rounded, as at 8, to be snugly received in the opening 3, its inner face being also rounded to con- .torni to theV outer peripheral contour of the brass or bearing members 4. The corners of the wedge-member 7 are formed with rounded extensions in the nature of lugs 9'and these lugs are adapted to be received in the groove 6.

Bolted, or otherwise secured on the outer face of the box 1, to the sides but directly opposite the movable wedge member 7, there are the offset leg portions of a substantiallv U-shaped bracket 10. Received through a central ouening in this bracket there is a screw 11. The screw has a squared head 12, and inward of the head is formed with a shoulder' 13 to'contact with the inner face of the bracket 10. The screw inward of its end is also provided with a second shoulder or enlargement 14 which contacts with the outer face of the bracket. Preferably the enlargement 14 is in the nature of a nut that The screw 11 engages a central longitudinally extending 'threaded opening 15 in the wedge member 7.

fiy turning the screw it will be apparent that the wedge member will be moved longitudinally. 'lhe movement of the wedge member in one direction causes the bearing brasses 4 to be moved awavfrorn each other, tuus compensating for wear on these members or on the journal that is engaged'by these members. The turning of the screw to move the wedge in a second direction will bring the members 4 toward eaeh other so that when weight imparted on the box is relieved therefrom the device as a whole may be readily removed from the box. It will be apparent that when the box and the parts therein are so arranged, that the bearing members may be inserted in the box.

iIn Figure of the drawings I have illustrated a slight modification. In this form the brass bearing segments 4 are constructed similar to that previously described, but preferably the rib 5 thereon is notched, while there is arranged over the outer face 1 of each of the sections 4 a liner 1G which may beofhardened steel and which, of course, conforms to the outer faces of the segments 4', including the ribbed portions 5 thereof. The central outstanding rib portion ofthe liner is apertured to receive the lugs of the rib 5 therein. Also preferably the body of the aperture is further apertured soihat the said linermav be welded to the bearing sections 4 through these apertures. Of

l course, it is not an absolute requirement that The simplicity of my invention and the advantages thereof will be readily apparent. to those skilled in the art to which such invention relates when the foregoing description has been carefully read in connection with the drawings, but it is to be, of course, understood that I do not wish to be re stricted to the precise features of construetion herein set forth and may make such changes therefrom as fairly fall within the scope of what I claim.

.Having described the invention, I claim rl`he combination with a journal box, of brass bearings for the journal therein, each of said bearings comprising two segmental sections which are gradually decreased in thickness from their confrontingr to their opposite ends, means between the bearing sections and the box for preventing the longi tudinal movement of the said sections, said box, at the top thereof between the confronting ends of the hearing sections having ang opening therethrough whose wall is rounded,

a segmental member having its rounded surface received in the round opening, said member having its under face, at its coi ners formed with depending lugs which are arranged at opposite angles, and the segmental sections having angularly disposed grooves to receive the lugs therein, a substantially U-shaped bracket having its ends fixed on the face of the box, a screw revoluble but heldfrom longitudinal movement through the bracket, and said last mentioned segmental member having a threaded opening `in which the screw is threaded, as and for the purpose set forth.

In testimony whereof I aflix my signature. 

